Journal
INORGANIC CHEMISTRY COMMUNICATIONS
Volume 14, Issue 8, Pages 1297-1301Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.inoche.2011.05.015
Keywords
Fluorescent probe; Zn (II); Schiff base; 4,4 '-diaminodiphenylmethane
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Funding
- National Science Foundation of China [21071134, 20971115]
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A Schiff base compound (L) was synthesized using o-vanillin and 4, 4'-diaminodiphenylmethane and characterized by elemental analysis, (1)H NMR, (13)C NMR, IR, electronic absorption spectra and X-ray diffraction single crystal analysis. The title compound(L) has no fluorescence intensity in a range of 450-650 nm, but its fluorescence spectrum shows enhancement in the intensity of the signal at 372 nm on binding with the Zn(II) cation from pH = 6 to 14. No such significant change was observed for other metal ions. Fluorescence intensity was linear with concentration of Zn (II) cation in a range from 1 x 10(-7) mol L(-1) to 1.2 x 10(-5) mol.L(-1). This Schiff base compound is a promising system for the development of new fluorescent probes for the detection of Zn (II) cation. (C) 2011 Elsevier B.V. All rights reserved.
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